Definition of "Awful" :

adjective: causing fear or dread or terror

"The awful war."

adjective: exceptionally bad or displeasing

"An awful voice."

adjective: inspiring awe or admiration or wonder

"This sea, whose gently awful stirrings seem to speak of some hidden soul beneath."

adjective: offensive or even (of persons) malicious

adjective: extreme in degree or extent or amount or impact

adjective: inspired by a feeling of fearful wonderment or reverence

"Awful worshippers with bowed heads."

adverb: used as intensifiers

"I'm awful sorry."